./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-token-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:32:51,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:32:51,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:32:51,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:32:51,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:32:51,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:32:51,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:32:51,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:32:51,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:32:51,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:32:51,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:32:51,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:32:51,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:32:51,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:32:51,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:32:51,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:32:51,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:32:51,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:32:51,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:32:51,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:32:51,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:32:51,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:32:51,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:32:51,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:32:51,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:32:51,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:32:51,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:32:51,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:32:51,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:32:51,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:32:51,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:32:51,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:32:51,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:32:51,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:32:51,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:32:51,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:32:51,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:32:51,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:32:51,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:32:51,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:32:51,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:32:51,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:32:51,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:32:51,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:32:51,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:32:51,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:32:51,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:32:51,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:32:51,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:32:51,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:32:51,676 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:32:51,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:32:51,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:32:51,678 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:32:51,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:32:51,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:32:51,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:32:51,679 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:32:51,679 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:32:51,679 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:32:51,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:32:51,680 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:32:51,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:32:51,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:32:51,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:32:51,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:32:51,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:32:51,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:32:51,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:32:51,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:32:51,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:32:51,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:32:51,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:32:51,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 [2021-11-19 05:32:51,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:32:52,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:32:52,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:32:52,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:32:52,019 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:32:52,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/forester-heap/dll-token-1.i [2021-11-19 05:32:52,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/data/3c1f6c391/9ac217229b3c45bdaf6ba9113146228d/FLAGa5c6bd098 [2021-11-19 05:32:52,697 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:32:52,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i [2021-11-19 05:32:52,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/data/3c1f6c391/9ac217229b3c45bdaf6ba9113146228d/FLAGa5c6bd098 [2021-11-19 05:32:52,944 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/data/3c1f6c391/9ac217229b3c45bdaf6ba9113146228d [2021-11-19 05:32:52,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:32:52,948 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:32:52,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:32:52,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:32:52,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:32:52,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:32:52" (1/1) ... [2021-11-19 05:32:52,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac7a43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:52, skipping insertion in model container [2021-11-19 05:32:52,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:32:52" (1/1) ... [2021-11-19 05:32:52,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:32:53,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:32:53,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22229,22242] [2021-11-19 05:32:53,363 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22398,22411] [2021-11-19 05:32:53,365 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22489,22502] [2021-11-19 05:32:53,367 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22571,22584] [2021-11-19 05:32:53,368 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22649,22662] [2021-11-19 05:32:53,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22795,22808] [2021-11-19 05:32:53,375 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:32:53,384 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:32:53,457 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22229,22242] [2021-11-19 05:32:53,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22398,22411] [2021-11-19 05:32:53,461 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22489,22502] [2021-11-19 05:32:53,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22571,22584] [2021-11-19 05:32:53,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22649,22662] [2021-11-19 05:32:53,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/sv-benchmarks/c/forester-heap/dll-token-1.i[22795,22808] [2021-11-19 05:32:53,467 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:32:53,517 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:32:53,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:53 WrapperNode [2021-11-19 05:32:53,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:32:53,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:32:53,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:32:53,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:32:53,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:53" (1/1) ... [2021-11-19 05:32:53,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:53" (1/1) ... [2021-11-19 05:32:53,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:53" (1/1) ... [2021-11-19 05:32:53,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:53" (1/1) ... [2021-11-19 05:32:53,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:53" (1/1) ... [2021-11-19 05:32:53,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:53" (1/1) ... [2021-11-19 05:32:53,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:53" (1/1) ... [2021-11-19 05:32:53,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:32:53,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:32:53,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:32:53,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:32:53,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:53" (1/1) ... [2021-11-19 05:32:53,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:32:53,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:32:53,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:32:53,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:32:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:32:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:32:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:32:53,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:32:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:32:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:32:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:32:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:32:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:32:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:32:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:32:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:32:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:32:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:32:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:32:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:32:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:32:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:32:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:32:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:32:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:32:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:32:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:32:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:32:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:32:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:32:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:32:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:32:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:32:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:32:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:32:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:32:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:32:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:32:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:32:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:32:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:32:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:32:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:32:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:32:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:32:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:32:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:32:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:32:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:32:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:32:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:32:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:32:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:32:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:32:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:32:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:32:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:32:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:32:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:32:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:32:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:32:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:32:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-19 05:32:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:32:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:32:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:32:53,728 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:32:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:32:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:32:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:32:53,729 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:32:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:32:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:32:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:32:53,730 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:32:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:32:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:32:53,731 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:32:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:32:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:32:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:32:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:32:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:32:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:32:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:32:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:32:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:32:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:32:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:32:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:32:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:32:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:32:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:32:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:32:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:32:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:32:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:32:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:32:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:32:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:32:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:32:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:32:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:32:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:32:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:32:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:32:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:32:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:32:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:32:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:32:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:32:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:32:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:32:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:32:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:32:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:32:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:32:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:32:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:32:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:32:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:32:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:32:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:32:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:32:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:32:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:32:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:32:54,036 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:32:54,038 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:32:54,405 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:32:54,413 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:32:54,413 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-19 05:32:54,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:32:54 BoogieIcfgContainer [2021-11-19 05:32:54,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:32:54,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:32:54,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:32:54,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:32:54,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:32:52" (1/3) ... [2021-11-19 05:32:54,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d4b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:32:54, skipping insertion in model container [2021-11-19 05:32:54,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:53" (2/3) ... [2021-11-19 05:32:54,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d4b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:32:54, skipping insertion in model container [2021-11-19 05:32:54,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:32:54" (3/3) ... [2021-11-19 05:32:54,424 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-1.i [2021-11-19 05:32:54,430 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:32:54,430 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-11-19 05:32:54,485 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:32:54,494 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:32:54,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-11-19 05:32:54,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 136 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:32:54,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:32:54,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:54,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:54,544 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:32:54,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:54,552 INFO L85 PathProgramCache]: Analyzing trace with hash -106181274, now seen corresponding path program 1 times [2021-11-19 05:32:54,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:54,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157993662] [2021-11-19 05:32:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:54,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:54,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:54,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157993662] [2021-11-19 05:32:54,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157993662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:54,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:54,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:32:54,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538369303] [2021-11-19 05:32:54,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:54,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:32:54,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:54,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:32:54,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:32:54,931 INFO L87 Difference]: Start difference. First operand has 141 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 136 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:55,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:55,279 INFO L93 Difference]: Finished difference Result 158 states and 161 transitions. [2021-11-19 05:32:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:32:55,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 05:32:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:55,300 INFO L225 Difference]: With dead ends: 158 [2021-11-19 05:32:55,301 INFO L226 Difference]: Without dead ends: 155 [2021-11-19 05:32:55,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:32:55,317 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 261 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:55,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 96 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:32:55,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-19 05:32:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 135. [2021-11-19 05:32:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 71 states have (on average 1.8873239436619718) internal successors, (134), 131 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2021-11-19 05:32:55,403 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 7 [2021-11-19 05:32:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:55,403 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2021-11-19 05:32:55,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2021-11-19 05:32:55,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:32:55,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:55,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:55,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:32:55,408 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:32:55,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:55,412 INFO L85 PathProgramCache]: Analyzing trace with hash -106181273, now seen corresponding path program 1 times [2021-11-19 05:32:55,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:55,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763375188] [2021-11-19 05:32:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:55,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:55,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:55,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:55,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763375188] [2021-11-19 05:32:55,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763375188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:55,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:55,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:32:55,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347160177] [2021-11-19 05:32:55,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:55,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:32:55,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:55,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:32:55,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:32:55,550 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:55,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:55,770 INFO L93 Difference]: Finished difference Result 160 states and 162 transitions. [2021-11-19 05:32:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:32:55,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 05:32:55,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:55,776 INFO L225 Difference]: With dead ends: 160 [2021-11-19 05:32:55,776 INFO L226 Difference]: Without dead ends: 160 [2021-11-19 05:32:55,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:32:55,779 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 270 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:55,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 92 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:32:55,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-19 05:32:55,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 132. [2021-11-19 05:32:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 71 states have (on average 1.8450704225352113) internal successors, (131), 128 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:55,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2021-11-19 05:32:55,809 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 7 [2021-11-19 05:32:55,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:55,809 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2021-11-19 05:32:55,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2021-11-19 05:32:55,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 05:32:55,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:55,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:55,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:32:55,811 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:32:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash 550299256, now seen corresponding path program 1 times [2021-11-19 05:32:55,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:55,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099266891] [2021-11-19 05:32:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:55,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:55,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:55,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:55,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099266891] [2021-11-19 05:32:55,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099266891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:55,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:55,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:32:55,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044173147] [2021-11-19 05:32:55,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:55,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:32:55,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:55,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:32:55,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:32:55,889 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:56,172 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2021-11-19 05:32:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:32:56,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-19 05:32:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:56,174 INFO L225 Difference]: With dead ends: 136 [2021-11-19 05:32:56,174 INFO L226 Difference]: Without dead ends: 136 [2021-11-19 05:32:56,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:32:56,176 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 315 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:56,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 68 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:32:56,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-19 05:32:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 119. [2021-11-19 05:32:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.643835616438356) internal successors, (120), 115 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2021-11-19 05:32:56,184 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 13 [2021-11-19 05:32:56,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:56,184 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2021-11-19 05:32:56,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:56,185 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2021-11-19 05:32:56,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 05:32:56,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:56,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:56,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:32:56,186 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr18REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:32:56,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:56,186 INFO L85 PathProgramCache]: Analyzing trace with hash 550299257, now seen corresponding path program 1 times [2021-11-19 05:32:56,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:56,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143546308] [2021-11-19 05:32:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:56,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:56,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:56,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:56,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143546308] [2021-11-19 05:32:56,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143546308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:56,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:56,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:32:56,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503656200] [2021-11-19 05:32:56,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:56,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:32:56,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:56,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:32:56,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:32:56,335 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:56,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:56,679 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2021-11-19 05:32:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:32:56,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-19 05:32:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:56,681 INFO L225 Difference]: With dead ends: 211 [2021-11-19 05:32:56,681 INFO L226 Difference]: Without dead ends: 211 [2021-11-19 05:32:56,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:32:56,683 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 429 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:56,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 68 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:32:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-19 05:32:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 156. [2021-11-19 05:32:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 110 states have (on average 1.5272727272727273) internal successors, (168), 152 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 171 transitions. [2021-11-19 05:32:56,701 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 171 transitions. Word has length 13 [2021-11-19 05:32:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:56,702 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 171 transitions. [2021-11-19 05:32:56,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 171 transitions. [2021-11-19 05:32:56,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 05:32:56,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:56,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:56,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:32:56,704 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:32:56,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:56,705 INFO L85 PathProgramCache]: Analyzing trace with hash 75654871, now seen corresponding path program 1 times [2021-11-19 05:32:56,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:56,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432792361] [2021-11-19 05:32:56,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:56,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:56,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:56,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432792361] [2021-11-19 05:32:56,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432792361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:56,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:56,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:32:56,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52024412] [2021-11-19 05:32:56,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:56,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:32:56,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:56,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:32:56,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:32:56,821 INFO L87 Difference]: Start difference. First operand 156 states and 171 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:57,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:57,135 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2021-11-19 05:32:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:32:57,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-19 05:32:57,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:57,137 INFO L225 Difference]: With dead ends: 155 [2021-11-19 05:32:57,137 INFO L226 Difference]: Without dead ends: 155 [2021-11-19 05:32:57,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:32:57,138 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 121 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:57,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 125 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:32:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-19 05:32:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-11-19 05:32:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 110 states have (on average 1.509090909090909) internal successors, (166), 151 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2021-11-19 05:32:57,147 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 16 [2021-11-19 05:32:57,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:57,147 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2021-11-19 05:32:57,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:57,148 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2021-11-19 05:32:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 05:32:57,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:57,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:57,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:32:57,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:32:57,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:57,150 INFO L85 PathProgramCache]: Analyzing trace with hash 75654872, now seen corresponding path program 1 times [2021-11-19 05:32:57,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:57,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792134700] [2021-11-19 05:32:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:57,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:57,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:57,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:57,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792134700] [2021-11-19 05:32:57,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792134700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:57,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:57,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:32:57,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628239194] [2021-11-19 05:32:57,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:57,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:32:57,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:57,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:32:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:32:57,305 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:57,700 INFO L93 Difference]: Finished difference Result 154 states and 167 transitions. [2021-11-19 05:32:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:32:57,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-19 05:32:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:57,702 INFO L225 Difference]: With dead ends: 154 [2021-11-19 05:32:57,702 INFO L226 Difference]: Without dead ends: 154 [2021-11-19 05:32:57,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:32:57,704 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 115 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:57,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 126 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:32:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-19 05:32:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-19 05:32:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 110 states have (on average 1.490909090909091) internal successors, (164), 150 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 167 transitions. [2021-11-19 05:32:57,711 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 167 transitions. Word has length 16 [2021-11-19 05:32:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:57,711 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 167 transitions. [2021-11-19 05:32:57,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 167 transitions. [2021-11-19 05:32:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 05:32:57,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:57,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:57,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:32:57,713 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr23REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:32:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash -931365320, now seen corresponding path program 1 times [2021-11-19 05:32:57,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:57,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958502980] [2021-11-19 05:32:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:57,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:57,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:57,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958502980] [2021-11-19 05:32:57,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958502980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:57,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:57,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:32:57,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982870251] [2021-11-19 05:32:57,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:57,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:32:57,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:32:57,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:32:57,818 INFO L87 Difference]: Start difference. First operand 154 states and 167 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:58,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:58,142 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2021-11-19 05:32:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:32:58,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-19 05:32:58,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:58,144 INFO L225 Difference]: With dead ends: 153 [2021-11-19 05:32:58,144 INFO L226 Difference]: Without dead ends: 153 [2021-11-19 05:32:58,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:32:58,145 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 120 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:58,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 121 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:32:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-19 05:32:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-19 05:32:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 110 states have (on average 1.4727272727272727) internal successors, (162), 149 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2021-11-19 05:32:58,156 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 18 [2021-11-19 05:32:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:58,157 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2021-11-19 05:32:58,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2021-11-19 05:32:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 05:32:58,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:58,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:58,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:32:58,160 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr24REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:32:58,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:58,164 INFO L85 PathProgramCache]: Analyzing trace with hash -931365319, now seen corresponding path program 1 times [2021-11-19 05:32:58,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:58,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798377452] [2021-11-19 05:32:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:58,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:58,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:58,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798377452] [2021-11-19 05:32:58,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798377452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:58,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:58,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:32:58,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65586162] [2021-11-19 05:32:58,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:58,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:32:58,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:58,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:32:58,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:32:58,276 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:58,625 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2021-11-19 05:32:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:32:58,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-19 05:32:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:58,627 INFO L225 Difference]: With dead ends: 152 [2021-11-19 05:32:58,627 INFO L226 Difference]: Without dead ends: 152 [2021-11-19 05:32:58,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:32:58,628 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 113 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:58,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 124 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:32:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-19 05:32:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-19 05:32:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 110 states have (on average 1.4545454545454546) internal successors, (160), 148 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 163 transitions. [2021-11-19 05:32:58,634 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 163 transitions. Word has length 18 [2021-11-19 05:32:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:58,634 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 163 transitions. [2021-11-19 05:32:58,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 163 transitions. [2021-11-19 05:32:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:32:58,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:58,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:58,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:32:58,636 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:32:58,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1665541607, now seen corresponding path program 1 times [2021-11-19 05:32:58,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:58,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799666945] [2021-11-19 05:32:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:58,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:58,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:58,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799666945] [2021-11-19 05:32:58,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799666945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:58,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:58,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 05:32:58,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599950487] [2021-11-19 05:32:58,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:58,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:32:58,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:32:58,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:32:58,773 INFO L87 Difference]: Start difference. First operand 152 states and 163 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:59,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:59,347 INFO L93 Difference]: Finished difference Result 156 states and 163 transitions. [2021-11-19 05:32:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:32:59,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-19 05:32:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:59,349 INFO L225 Difference]: With dead ends: 156 [2021-11-19 05:32:59,349 INFO L226 Difference]: Without dead ends: 156 [2021-11-19 05:32:59,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:32:59,351 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 295 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:59,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 86 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:32:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-19 05:32:59,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2021-11-19 05:32:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 147 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:59,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2021-11-19 05:32:59,357 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 20 [2021-11-19 05:32:59,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:59,357 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2021-11-19 05:32:59,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:32:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2021-11-19 05:32:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:32:59,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:59,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:59,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:32:59,359 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:32:59,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:59,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1665541606, now seen corresponding path program 1 times [2021-11-19 05:32:59,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:59,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058587710] [2021-11-19 05:32:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:59,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:59,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:59,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058587710] [2021-11-19 05:32:59,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058587710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:59,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:59,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:32:59,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8196879] [2021-11-19 05:32:59,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:59,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:32:59,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:59,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:32:59,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:32:59,603 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:00,614 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2021-11-19 05:33:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:33:00,615 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-19 05:33:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:00,616 INFO L225 Difference]: With dead ends: 153 [2021-11-19 05:33:00,616 INFO L226 Difference]: Without dead ends: 153 [2021-11-19 05:33:00,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2021-11-19 05:33:00,617 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 289 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:00,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 96 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:33:00,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-19 05:33:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 127. [2021-11-19 05:33:00,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 94 states have (on average 1.425531914893617) internal successors, (134), 123 states have internal predecessors, (134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-11-19 05:33:00,622 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 20 [2021-11-19 05:33:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:00,623 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-11-19 05:33:00,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:00,623 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-11-19 05:33:00,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 05:33:00,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:00,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:00,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:33:00,625 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr27REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:00,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash -815463296, now seen corresponding path program 1 times [2021-11-19 05:33:00,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:00,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287658609] [2021-11-19 05:33:00,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:00,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:00,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:00,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287658609] [2021-11-19 05:33:00,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287658609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:00,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:00,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:33:00,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894796385] [2021-11-19 05:33:00,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:00,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:33:00,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:00,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:33:00,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:33:00,734 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:01,089 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2021-11-19 05:33:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:33:01,090 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-19 05:33:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:01,091 INFO L225 Difference]: With dead ends: 130 [2021-11-19 05:33:01,091 INFO L226 Difference]: Without dead ends: 130 [2021-11-19 05:33:01,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:33:01,093 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 162 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:01,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 96 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:33:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-19 05:33:01,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-11-19 05:33:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 122 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2021-11-19 05:33:01,097 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 21 [2021-11-19 05:33:01,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:01,098 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2021-11-19 05:33:01,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2021-11-19 05:33:01,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 05:33:01,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:01,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:01,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 05:33:01,099 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr28REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:01,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:01,100 INFO L85 PathProgramCache]: Analyzing trace with hash -815463295, now seen corresponding path program 1 times [2021-11-19 05:33:01,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:01,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139616920] [2021-11-19 05:33:01,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:01,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:01,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:01,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:01,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139616920] [2021-11-19 05:33:01,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139616920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:01,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:01,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:33:01,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528973380] [2021-11-19 05:33:01,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:01,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:33:01,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:01,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:33:01,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:33:01,273 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:01,683 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-11-19 05:33:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:33:01,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-19 05:33:01,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:01,685 INFO L225 Difference]: With dead ends: 129 [2021-11-19 05:33:01,685 INFO L226 Difference]: Without dead ends: 129 [2021-11-19 05:33:01,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:33:01,686 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 157 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:01,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 96 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:33:01,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-19 05:33:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2021-11-19 05:33:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 121 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2021-11-19 05:33:01,691 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 21 [2021-11-19 05:33:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:01,691 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2021-11-19 05:33:01,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2021-11-19 05:33:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:33:01,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:01,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:01,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 05:33:01,693 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr16ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:01,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:01,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1437317817, now seen corresponding path program 1 times [2021-11-19 05:33:01,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:01,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779575997] [2021-11-19 05:33:01,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:01,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:01,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:01,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:01,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779575997] [2021-11-19 05:33:01,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779575997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:01,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:01,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 05:33:01,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130644717] [2021-11-19 05:33:01,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:01,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:33:01,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:33:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:33:01,836 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:02,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:02,542 INFO L93 Difference]: Finished difference Result 147 states and 154 transitions. [2021-11-19 05:33:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 05:33:02,542 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-19 05:33:02,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:02,544 INFO L225 Difference]: With dead ends: 147 [2021-11-19 05:33:02,544 INFO L226 Difference]: Without dead ends: 147 [2021-11-19 05:33:02,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-11-19 05:33:02,548 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 272 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:02,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 100 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:33:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-19 05:33:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 123. [2021-11-19 05:33:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 93 states have (on average 1.3978494623655915) internal successors, (130), 119 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-11-19 05:33:02,553 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 22 [2021-11-19 05:33:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:02,554 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-11-19 05:33:02,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:02,554 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-11-19 05:33:02,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:33:02,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:02,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:02,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 05:33:02,556 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr29ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1131965188, now seen corresponding path program 1 times [2021-11-19 05:33:02,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:02,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465903152] [2021-11-19 05:33:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:02,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:02,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:02,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465903152] [2021-11-19 05:33:02,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465903152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:02,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:02,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:33:02,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068569755] [2021-11-19 05:33:02,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:02,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:33:02,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:33:02,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:33:02,606 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:02,821 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2021-11-19 05:33:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:33:02,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-19 05:33:02,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:02,824 INFO L225 Difference]: With dead ends: 185 [2021-11-19 05:33:02,825 INFO L226 Difference]: Without dead ends: 185 [2021-11-19 05:33:02,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:33:02,826 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 360 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:02,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 79 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:02,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-19 05:33:02,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 121. [2021-11-19 05:33:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.391304347826087) internal successors, (128), 117 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2021-11-19 05:33:02,832 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 24 [2021-11-19 05:33:02,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:02,832 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2021-11-19 05:33:02,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2021-11-19 05:33:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 05:33:02,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:02,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:02,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 05:33:02,834 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr39ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:02,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:02,835 INFO L85 PathProgramCache]: Analyzing trace with hash 554090547, now seen corresponding path program 1 times [2021-11-19 05:33:02,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:02,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572404032] [2021-11-19 05:33:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:02,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:02,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:02,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572404032] [2021-11-19 05:33:02,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572404032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:02,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:02,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:33:02,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875364421] [2021-11-19 05:33:02,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:02,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:33:02,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:33:02,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:33:02,907 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:03,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:03,159 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2021-11-19 05:33:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:33:03,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-19 05:33:03,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:03,160 INFO L225 Difference]: With dead ends: 119 [2021-11-19 05:33:03,161 INFO L226 Difference]: Without dead ends: 119 [2021-11-19 05:33:03,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:33:03,162 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 96 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:03,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 103 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-19 05:33:03,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-19 05:33:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 91 states have (on average 1.3736263736263736) internal successors, (125), 115 states have internal predecessors, (125), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 128 transitions. [2021-11-19 05:33:03,167 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 128 transitions. Word has length 29 [2021-11-19 05:33:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:03,167 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 128 transitions. [2021-11-19 05:33:03,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 128 transitions. [2021-11-19 05:33:03,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 05:33:03,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:03,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:03,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 05:33:03,169 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:03,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash 554123318, now seen corresponding path program 1 times [2021-11-19 05:33:03,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:03,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364095182] [2021-11-19 05:33:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:03,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:03,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:03,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364095182] [2021-11-19 05:33:03,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364095182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:03,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:03,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 05:33:03,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729423093] [2021-11-19 05:33:03,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:03,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:33:03,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:03,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:33:03,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:33:03,488 INFO L87 Difference]: Start difference. First operand 119 states and 128 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:04,393 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2021-11-19 05:33:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 05:33:04,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-19 05:33:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:04,395 INFO L225 Difference]: With dead ends: 223 [2021-11-19 05:33:04,395 INFO L226 Difference]: Without dead ends: 223 [2021-11-19 05:33:04,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2021-11-19 05:33:04,397 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 537 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:04,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 73 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:33:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-19 05:33:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 135. [2021-11-19 05:33:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 107 states have (on average 1.3271028037383177) internal successors, (142), 131 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2021-11-19 05:33:04,404 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 29 [2021-11-19 05:33:04,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:04,410 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2021-11-19 05:33:04,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2021-11-19 05:33:04,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 05:33:04,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:04,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:04,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 05:33:04,415 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr42REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:04,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1356236695, now seen corresponding path program 1 times [2021-11-19 05:33:04,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:04,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945785024] [2021-11-19 05:33:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:04,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:04,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:04,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945785024] [2021-11-19 05:33:04,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945785024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:04,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:04,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:33:04,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664545444] [2021-11-19 05:33:04,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:04,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:33:04,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:04,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:33:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:33:04,653 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:05,555 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2021-11-19 05:33:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:33:05,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-11-19 05:33:05,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:05,557 INFO L225 Difference]: With dead ends: 189 [2021-11-19 05:33:05,557 INFO L226 Difference]: Without dead ends: 189 [2021-11-19 05:33:05,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:33:05,558 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 453 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:05,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 82 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:33:05,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-19 05:33:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 141. [2021-11-19 05:33:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 137 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2021-11-19 05:33:05,563 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 32 [2021-11-19 05:33:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:05,564 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2021-11-19 05:33:05,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2021-11-19 05:33:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 05:33:05,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:05,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:05,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 05:33:05,565 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr43REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:05,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:05,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1356236696, now seen corresponding path program 1 times [2021-11-19 05:33:05,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:05,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929671708] [2021-11-19 05:33:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:05,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:05,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:05,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929671708] [2021-11-19 05:33:05,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929671708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:05,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:05,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:33:05,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033004246] [2021-11-19 05:33:05,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:05,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:33:05,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:33:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:33:05,797 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:06,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:06,812 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2021-11-19 05:33:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 05:33:06,812 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-11-19 05:33:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:06,814 INFO L225 Difference]: With dead ends: 221 [2021-11-19 05:33:06,814 INFO L226 Difference]: Without dead ends: 221 [2021-11-19 05:33:06,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2021-11-19 05:33:06,815 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 438 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:06,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 95 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:33:06,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-19 05:33:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 141. [2021-11-19 05:33:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 137 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 151 transitions. [2021-11-19 05:33:06,822 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 151 transitions. Word has length 32 [2021-11-19 05:33:06,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:06,823 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 151 transitions. [2021-11-19 05:33:06,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:06,823 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 151 transitions. [2021-11-19 05:33:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 05:33:06,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:06,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:06,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 05:33:06,825 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:06,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1968378007, now seen corresponding path program 1 times [2021-11-19 05:33:06,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:06,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072359805] [2021-11-19 05:33:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:06,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:07,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:07,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:07,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072359805] [2021-11-19 05:33:07,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072359805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:07,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:07,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 05:33:07,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642381108] [2021-11-19 05:33:07,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:07,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:33:07,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:07,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:33:07,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:33:07,156 INFO L87 Difference]: Start difference. First operand 141 states and 151 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:08,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:08,286 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2021-11-19 05:33:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 05:33:08,287 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-11-19 05:33:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:08,288 INFO L225 Difference]: With dead ends: 219 [2021-11-19 05:33:08,288 INFO L226 Difference]: Without dead ends: 219 [2021-11-19 05:33:08,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-11-19 05:33:08,290 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 455 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:08,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 103 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:33:08,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-19 05:33:08,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 142. [2021-11-19 05:33:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 114 states have (on average 1.3070175438596492) internal successors, (149), 138 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2021-11-19 05:33:08,295 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 34 [2021-11-19 05:33:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:08,296 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2021-11-19 05:33:08,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2021-11-19 05:33:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:33:08,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:08,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:08,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 05:33:08,297 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr54ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:08,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash -385780622, now seen corresponding path program 1 times [2021-11-19 05:33:08,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:08,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031066672] [2021-11-19 05:33:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:08,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:08,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:08,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:08,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031066672] [2021-11-19 05:33:08,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031066672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:08,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:08,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:33:08,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942780560] [2021-11-19 05:33:08,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:08,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:33:08,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:08,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:33:08,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:33:08,355 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:08,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:08,621 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-11-19 05:33:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:33:08,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-11-19 05:33:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:08,623 INFO L225 Difference]: With dead ends: 140 [2021-11-19 05:33:08,623 INFO L226 Difference]: Without dead ends: 140 [2021-11-19 05:33:08,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:33:08,624 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 107 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:08,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 95 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-19 05:33:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-19 05:33:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 113 states have (on average 1.2920353982300885) internal successors, (146), 136 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2021-11-19 05:33:08,630 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 40 [2021-11-19 05:33:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:08,630 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2021-11-19 05:33:08,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2021-11-19 05:33:08,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-19 05:33:08,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:08,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:08,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 05:33:08,632 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr50ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:08,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:08,632 INFO L85 PathProgramCache]: Analyzing trace with hash 927086162, now seen corresponding path program 1 times [2021-11-19 05:33:08,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:08,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340808479] [2021-11-19 05:33:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:08,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:08,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:08,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340808479] [2021-11-19 05:33:08,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340808479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:08,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:08,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:33:08,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153112422] [2021-11-19 05:33:08,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:08,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:33:08,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:33:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:33:08,713 INFO L87 Difference]: Start difference. First operand 140 states and 149 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:08,914 INFO L93 Difference]: Finished difference Result 156 states and 161 transitions. [2021-11-19 05:33:08,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:33:08,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-11-19 05:33:08,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:08,916 INFO L225 Difference]: With dead ends: 156 [2021-11-19 05:33:08,916 INFO L226 Difference]: Without dead ends: 156 [2021-11-19 05:33:08,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:33:08,918 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 278 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:08,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 70 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:08,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-19 05:33:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2021-11-19 05:33:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 115 states have (on average 1.2869565217391303) internal successors, (148), 138 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2021-11-19 05:33:08,929 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 41 [2021-11-19 05:33:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:08,931 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2021-11-19 05:33:08,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2021-11-19 05:33:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-19 05:33:08,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:08,933 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:08,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 05:33:08,934 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr34ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:33:08,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:08,935 INFO L85 PathProgramCache]: Analyzing trace with hash -84958043, now seen corresponding path program 1 times [2021-11-19 05:33:08,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:08,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601112325] [2021-11-19 05:33:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:08,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:09,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:09,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:09,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601112325] [2021-11-19 05:33:09,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601112325] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:33:09,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763292918] [2021-11-19 05:33:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:09,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:33:09,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:33:09,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:33:09,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:33:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:09,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-19 05:33:09,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:09,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:33:10,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 05:33:10,150 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-19 05:33:10,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-19 05:33:10,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:33:10,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 05:33:10,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-19 05:33:10,453 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:33:10,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 57 [2021-11-19 05:33:10,469 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-19 05:33:10,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 43 [2021-11-19 05:33:10,637 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-19 05:33:10,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 22 [2021-11-19 05:33:10,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:33:10,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-19 05:33:10,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2021-11-19 05:33:11,043 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-19 05:33:11,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-19 05:33:11,136 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-19 05:33:11,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-11-19 05:33:11,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-19 05:33:11,376 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:33:11,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 65 [2021-11-19 05:33:11,409 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-19 05:33:11,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 54 [2021-11-19 05:33:11,574 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-19 05:33:11,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 31 [2021-11-19 05:33:11,708 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-19 05:33:11,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-11-19 05:33:12,347 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-19 05:33:12,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 25 [2021-11-19 05:33:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:12,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:35:58,726 WARN L227 SmtUtils]: Spent 1.38m on a formula simplification. DAG size of input: 1032 DAG size of output: 1007 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 05:35:58,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:35:58,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:35:58,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-19 05:35:58,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716413329] [2021-11-19 05:35:58,763 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:35:58,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 05:35:58,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:35:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 05:35:58,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=2243, Unknown=43, NotChecked=0, Total=2652 [2021-11-19 05:35:58,766 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:36:02,581 INFO L93 Difference]: Finished difference Result 233 states and 242 transitions. [2021-11-19 05:36:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 05:36:02,584 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-11-19 05:36:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:36:02,586 INFO L225 Difference]: With dead ends: 233 [2021-11-19 05:36:02,586 INFO L226 Difference]: Without dead ends: 233 [2021-11-19 05:36:02,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1707 ImplicationChecksByTransitivity, 85.4s TimeCoverageRelationStatistics Valid=807, Invalid=4551, Unknown=44, NotChecked=0, Total=5402 [2021-11-19 05:36:02,590 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 471 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:36:02,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 102 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 05:36:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-19 05:36:02,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 170. [2021-11-19 05:36:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 143 states have (on average 1.2447552447552448) internal successors, (178), 166 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 181 transitions. [2021-11-19 05:36:02,598 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 181 transitions. Word has length 41 [2021-11-19 05:36:02,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:36:02,599 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 181 transitions. [2021-11-19 05:36:02,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:02,600 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 181 transitions. [2021-11-19 05:36:02,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-19 05:36:02,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:36:02,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:36:02,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:36:02,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:36:02,815 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr57ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:36:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:36:02,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1367856744, now seen corresponding path program 1 times [2021-11-19 05:36:02,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:36:02,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076760838] [2021-11-19 05:36:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:02,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:36:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:36:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:03,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:36:03,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076760838] [2021-11-19 05:36:03,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076760838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:36:03,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:36:03,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:36:03,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388102999] [2021-11-19 05:36:03,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:36:03,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:36:03,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:36:03,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:36:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:36:03,128 INFO L87 Difference]: Start difference. First operand 170 states and 181 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:04,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:36:04,044 INFO L93 Difference]: Finished difference Result 229 states and 235 transitions. [2021-11-19 05:36:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 05:36:04,045 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-11-19 05:36:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:36:04,047 INFO L225 Difference]: With dead ends: 229 [2021-11-19 05:36:04,047 INFO L226 Difference]: Without dead ends: 229 [2021-11-19 05:36:04,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2021-11-19 05:36:04,049 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 426 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:36:04,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 83 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:36:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-19 05:36:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 179. [2021-11-19 05:36:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 152 states have (on average 1.236842105263158) internal successors, (188), 175 states have internal predecessors, (188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 191 transitions. [2021-11-19 05:36:04,057 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 191 transitions. Word has length 42 [2021-11-19 05:36:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:36:04,058 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 191 transitions. [2021-11-19 05:36:04,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 191 transitions. [2021-11-19 05:36:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 05:36:04,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:36:04,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:36:04,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 05:36:04,060 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr58ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:36:04,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:36:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash 546114171, now seen corresponding path program 1 times [2021-11-19 05:36:04,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:36:04,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098800851] [2021-11-19 05:36:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:04,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:36:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:36:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:04,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:36:04,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098800851] [2021-11-19 05:36:04,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098800851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:36:04,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:36:04,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:36:04,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333125911] [2021-11-19 05:36:04,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:36:04,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:36:04,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:36:04,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:36:04,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:36:04,356 INFO L87 Difference]: Start difference. First operand 179 states and 191 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:36:05,306 INFO L93 Difference]: Finished difference Result 228 states and 234 transitions. [2021-11-19 05:36:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 05:36:05,307 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-11-19 05:36:05,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:36:05,309 INFO L225 Difference]: With dead ends: 228 [2021-11-19 05:36:05,309 INFO L226 Difference]: Without dead ends: 228 [2021-11-19 05:36:05,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-11-19 05:36:05,310 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 416 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:36:05,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 82 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:36:05,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-19 05:36:05,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 180. [2021-11-19 05:36:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 153 states have (on average 1.2352941176470589) internal successors, (189), 176 states have internal predecessors, (189), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 192 transitions. [2021-11-19 05:36:05,319 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 192 transitions. Word has length 43 [2021-11-19 05:36:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:36:05,319 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 192 transitions. [2021-11-19 05:36:05,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:05,320 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 192 transitions. [2021-11-19 05:36:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 05:36:05,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:36:05,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:36:05,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 05:36:05,322 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr45REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:36:05,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:36:05,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1871579235, now seen corresponding path program 1 times [2021-11-19 05:36:05,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:36:05,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678522688] [2021-11-19 05:36:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:05,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:36:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:05,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:36:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:05,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:36:05,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678522688] [2021-11-19 05:36:05,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678522688] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:36:05,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990168052] [2021-11-19 05:36:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:05,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:36:05,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:36:05,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:36:05,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:36:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:05,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-19 05:36:05,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:36:06,045 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:36:06,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 05:36:06,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 05:36:06,258 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:36:06,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-11-19 05:36:06,478 INFO L354 Elim1Store]: treesize reduction 74, result has 23.7 percent of original size [2021-11-19 05:36:06,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 48 [2021-11-19 05:36:07,198 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:36:07,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2021-11-19 05:36:07,235 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:36:07,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-11-19 05:36:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:07,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:36:07,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:36:07,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2021-11-19 05:36:28,864 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:36:28,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42280 treesize of output 41232 [2021-11-19 05:36:31,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:36:31,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:36:31,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-19 05:36:31,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207464989] [2021-11-19 05:36:31,816 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:36:31,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:36:31,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:36:31,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:36:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1374, Unknown=9, NotChecked=0, Total=1560 [2021-11-19 05:36:31,819 INFO L87 Difference]: Start difference. First operand 180 states and 192 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:33,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:36:33,287 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2021-11-19 05:36:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 05:36:33,288 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-11-19 05:36:33,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:36:33,289 INFO L225 Difference]: With dead ends: 227 [2021-11-19 05:36:33,289 INFO L226 Difference]: Without dead ends: 227 [2021-11-19 05:36:33,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=400, Invalid=2783, Unknown=9, NotChecked=0, Total=3192 [2021-11-19 05:36:33,291 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 480 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:36:33,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 103 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:36:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-19 05:36:33,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 186. [2021-11-19 05:36:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 159 states have (on average 1.2327044025157232) internal successors, (196), 182 states have internal predecessors, (196), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 199 transitions. [2021-11-19 05:36:33,298 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 199 transitions. Word has length 43 [2021-11-19 05:36:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:36:33,299 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 199 transitions. [2021-11-19 05:36:33,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 199 transitions. [2021-11-19 05:36:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 05:36:33,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:36:33,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:36:33,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:36:33,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:36:33,513 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr46REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:36:33,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:36:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1871579236, now seen corresponding path program 1 times [2021-11-19 05:36:33,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:36:33,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17758935] [2021-11-19 05:36:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:33,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:36:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:33,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:36:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:33,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:36:33,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17758935] [2021-11-19 05:36:33,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17758935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:36:33,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184043980] [2021-11-19 05:36:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:33,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:36:33,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:36:33,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:36:33,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:36:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:34,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-19 05:36:34,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:36:34,609 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:36:34,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 40 [2021-11-19 05:36:34,622 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:36:34,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2021-11-19 05:36:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:34,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:36:34,859 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:36:34,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2021-11-19 05:36:35,060 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-19 05:36:35,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 33 [2021-11-19 05:36:35,068 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-19 05:36:35,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2021-11-19 05:36:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:35,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184043980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:36:35,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:36:35,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 30 [2021-11-19 05:36:35,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701709739] [2021-11-19 05:36:35,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:36:35,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-19 05:36:35,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:36:35,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-19 05:36:35,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2021-11-19 05:36:35,341 INFO L87 Difference]: Start difference. First operand 186 states and 199 transitions. Second operand has 31 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 30 states have internal predecessors, (112), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:36:38,724 INFO L93 Difference]: Finished difference Result 247 states and 256 transitions. [2021-11-19 05:36:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-19 05:36:38,725 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 30 states have internal predecessors, (112), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-11-19 05:36:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:36:38,727 INFO L225 Difference]: With dead ends: 247 [2021-11-19 05:36:38,727 INFO L226 Difference]: Without dead ends: 247 [2021-11-19 05:36:38,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=585, Invalid=2955, Unknown=0, NotChecked=0, Total=3540 [2021-11-19 05:36:38,730 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 623 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:36:38,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 272 Invalid, 1792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1530 Invalid, 0 Unknown, 159 Unchecked, 1.5s Time] [2021-11-19 05:36:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-19 05:36:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 206. [2021-11-19 05:36:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 182 states have (on average 1.2307692307692308) internal successors, (224), 202 states have internal predecessors, (224), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 227 transitions. [2021-11-19 05:36:38,740 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 227 transitions. Word has length 43 [2021-11-19 05:36:38,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:36:38,740 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 227 transitions. [2021-11-19 05:36:38,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 30 states have internal predecessors, (112), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:38,741 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 227 transitions. [2021-11-19 05:36:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 05:36:38,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:36:38,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:36:38,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:36:38,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-19 05:36:38,964 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr59ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:36:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:36:38,965 INFO L85 PathProgramCache]: Analyzing trace with hash -250329606, now seen corresponding path program 1 times [2021-11-19 05:36:38,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:36:38,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984655419] [2021-11-19 05:36:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:38,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:36:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:36:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:39,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:36:39,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984655419] [2021-11-19 05:36:39,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984655419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:36:39,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:36:39,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:36:39,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929264119] [2021-11-19 05:36:39,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:36:39,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:36:39,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:36:39,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:36:39,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:36:39,100 INFO L87 Difference]: Start difference. First operand 206 states and 227 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:36:39,735 INFO L93 Difference]: Finished difference Result 229 states and 242 transitions. [2021-11-19 05:36:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:36:39,736 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-11-19 05:36:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:36:39,738 INFO L225 Difference]: With dead ends: 229 [2021-11-19 05:36:39,738 INFO L226 Difference]: Without dead ends: 229 [2021-11-19 05:36:39,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:36:39,739 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 230 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:36:39,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 90 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:36:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-19 05:36:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 213. [2021-11-19 05:36:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 189 states have (on average 1.2328042328042328) internal successors, (233), 209 states have internal predecessors, (233), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 236 transitions. [2021-11-19 05:36:39,747 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 236 transitions. Word has length 44 [2021-11-19 05:36:39,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:36:39,748 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 236 transitions. [2021-11-19 05:36:39,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:36:39,748 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 236 transitions. [2021-11-19 05:36:39,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 05:36:39,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:36:39,749 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:36:39,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 05:36:39,749 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr42REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:36:39,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:36:39,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2073434312, now seen corresponding path program 1 times [2021-11-19 05:36:39,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:36:39,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712899143] [2021-11-19 05:36:39,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:39,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:36:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:40,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:36:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:40,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:36:40,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712899143] [2021-11-19 05:36:40,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712899143] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:36:40,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615172042] [2021-11-19 05:36:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:40,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:36:40,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:36:40,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:36:40,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 05:36:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:40,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-19 05:36:40,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:36:40,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:36:40,596 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:36:40,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 05:36:40,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 05:36:40,809 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:36:40,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-11-19 05:36:41,105 INFO L354 Elim1Store]: treesize reduction 82, result has 21.9 percent of original size [2021-11-19 05:36:41,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 36 [2021-11-19 05:36:41,266 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-19 05:36:41,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2021-11-19 05:36:41,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:36:41,337 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-19 05:36:41,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-19 05:36:41,425 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 05:36:41,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 30 [2021-11-19 05:36:41,670 INFO L354 Elim1Store]: treesize reduction 68, result has 18.1 percent of original size [2021-11-19 05:36:41,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 42 [2021-11-19 05:36:41,975 INFO L354 Elim1Store]: treesize reduction 134, result has 18.3 percent of original size [2021-11-19 05:36:41,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 71 [2021-11-19 05:36:42,274 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-19 05:36:42,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 33 [2021-11-19 05:36:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:42,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:37:05,043 INFO L354 Elim1Store]: treesize reduction 5, result has 96.3 percent of original size [2021-11-19 05:37:05,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 143 [2021-11-19 05:37:34,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56738 treesize of output 56642 [2021-11-19 05:37:39,129 INFO L354 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2021-11-19 05:37:39,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52054 treesize of output 52056 [2021-11-19 05:37:40,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:37:40,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:37:40,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-19 05:37:40,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852058052] [2021-11-19 05:37:40,020 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:37:40,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 05:37:40,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:37:40,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 05:37:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2211, Unknown=24, NotChecked=0, Total=2450 [2021-11-19 05:37:40,022 INFO L87 Difference]: Start difference. First operand 213 states and 236 transitions. Second operand has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:37:42,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:37:42,850 INFO L93 Difference]: Finished difference Result 297 states and 322 transitions. [2021-11-19 05:37:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 05:37:42,851 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-11-19 05:37:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:37:42,854 INFO L225 Difference]: With dead ends: 297 [2021-11-19 05:37:42,855 INFO L226 Difference]: Without dead ends: 297 [2021-11-19 05:37:42,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1349 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=513, Invalid=4575, Unknown=24, NotChecked=0, Total=5112 [2021-11-19 05:37:42,858 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 559 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:37:42,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 115 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 05:37:42,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-19 05:37:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 219. [2021-11-19 05:37:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 195 states have (on average 1.2307692307692308) internal successors, (240), 215 states have internal predecessors, (240), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:37:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 243 transitions. [2021-11-19 05:37:42,870 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 243 transitions. Word has length 44 [2021-11-19 05:37:42,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:37:42,870 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 243 transitions. [2021-11-19 05:37:42,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:37:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 243 transitions. [2021-11-19 05:37:42,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 05:37:42,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:37:42,872 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:37:42,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:37:43,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-19 05:37:43,088 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr43REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 59 more)] === [2021-11-19 05:37:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:37:43,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2073434313, now seen corresponding path program 1 times [2021-11-19 05:37:43,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:37:43,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363431573] [2021-11-19 05:37:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:37:43,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:37:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:43,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:37:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:37:43,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:37:43,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363431573] [2021-11-19 05:37:43,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363431573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:37:43,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556414880] [2021-11-19 05:37:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:37:43,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:37:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:37:43,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:37:43,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ee620b0-846e-4341-b558-a5a444dda958/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 05:37:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:37:44,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-19 05:37:44,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:37:44,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:37:44,195 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-19 05:37:44,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-19 05:37:44,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 05:37:44,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-19 05:37:44,478 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:37:44,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-19 05:37:44,493 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-19 05:37:44,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 54 [2021-11-19 05:37:44,863 INFO L354 Elim1Store]: treesize reduction 82, result has 21.9 percent of original size [2021-11-19 05:37:44,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 76 [2021-11-19 05:37:44,900 INFO L354 Elim1Store]: treesize reduction 74, result has 23.7 percent of original size [2021-11-19 05:37:44,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 60 [2021-11-19 05:37:45,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-19 05:37:45,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-19 05:37:45,166 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-19 05:37:45,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-19 05:37:45,202 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-19 05:37:45,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-19 05:37:45,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-19 05:37:45,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-19 05:37:45,599 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-19 05:37:45,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 63 [2021-11-19 05:37:45,615 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-19 05:37:45,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 69 [2021-11-19 05:37:45,985 INFO L354 Elim1Store]: treesize reduction 134, result has 18.3 percent of original size [2021-11-19 05:37:45,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 195 treesize of output 116 [2021-11-19 05:37:46,030 INFO L354 Elim1Store]: treesize reduction 122, result has 20.3 percent of original size [2021-11-19 05:37:46,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 127 [2021-11-19 05:37:46,507 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-19 05:37:46,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 57 [2021-11-19 05:37:46,517 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:37:46,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 38 [2021-11-19 05:37:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:37:46,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:38:17,456 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:38:17,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1045 treesize of output 1049 [2021-11-19 05:39:45,170 WARN L227 SmtUtils]: Spent 6.33s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:39:59,420 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~x~0.offset Int) (|v_main_#t~malloc6.base_12| Int) (v_main_~x~0.offset_76 Int)) (or (and (forall ((|main_#t~malloc6.offset| Int) (|main_#t~mem8.offset| Int) (|main_#t~mem7.offset| Int) (v_DerPreprocessor_10 Int) (v_prenex_8 Int) (v_prenex_9 Int)) (<= 0 (+ 8 (select (select (let ((.cse3 (+ |main_#t~mem7.offset| 4)) (.cse4 (+ main_~x~0.offset 8))) (let ((.cse0 (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base| (store (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base|) .cse4 v_prenex_8) main_~x~0.offset |main_#t~malloc6.offset|)))) (store .cse5 |v_main_#t~malloc6.base_12| (store (select .cse5 |v_main_#t~malloc6.base_12|) .cse3 main_~x~0.offset)))) (.cse1 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) .cse4 v_prenex_9) main_~x~0.offset |v_main_#t~malloc6.base_12|)))) (store .cse2 |v_main_#t~malloc6.base_12| (store (select .cse2 |v_main_#t~malloc6.base_12|) .cse3 |c_main_#t~mem5.base|))) |c_main_#t~mem5.base|) main_~x~0.offset))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |main_#t~mem8.offset| 8) v_DerPreprocessor_10)))) c_main_~head~0.base) v_main_~x~0.offset_76)))) (forall ((v_prenex_6 Int) (v_prenex_7 Int) (v_DerPreprocessor_11 Int) (v_prenex_4 Int) (v_DerPreprocessor_12 Int) (v_prenex_5 Int)) (let ((.cse6 (select (select (let ((.cse13 (+ v_prenex_6 4)) (.cse14 (+ main_~x~0.offset 8))) (let ((.cse10 (let ((.cse15 (store |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base| (store (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base|) .cse14 v_DerPreprocessor_11) main_~x~0.offset v_prenex_4)))) (store .cse15 |v_main_#t~malloc6.base_12| (store (select .cse15 |v_main_#t~malloc6.base_12|) .cse13 main_~x~0.offset)))) (.cse11 (select (select (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) .cse14 v_DerPreprocessor_12) main_~x~0.offset |v_main_#t~malloc6.base_12|)))) (store .cse12 |v_main_#t~malloc6.base_12| (store (select .cse12 |v_main_#t~malloc6.base_12|) .cse13 |c_main_#t~mem5.base|))) |c_main_#t~mem5.base|) main_~x~0.offset))) (store .cse10 .cse11 (store (select .cse10 .cse11) (+ v_prenex_5 8) v_prenex_7)))) c_main_~head~0.base) v_main_~x~0.offset_76))) (or (and (<= .cse6 main_~x~0.offset) (forall ((v_DerPreprocessor_9 Int)) (not (= |v_main_#t~malloc6.base_12| (select (select (let ((.cse7 (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) (+ main_~x~0.offset 8) v_DerPreprocessor_12) main_~x~0.offset |v_main_#t~malloc6.base_12|)))) (store .cse9 |v_main_#t~malloc6.base_12| (store (select .cse9 |v_main_#t~malloc6.base_12|) (+ v_prenex_6 4) |c_main_#t~mem5.base|))))) (let ((.cse8 (select (select .cse7 |c_main_#t~mem5.base|) main_~x~0.offset))) (store .cse7 .cse8 (store (select .cse7 .cse8) (+ v_prenex_5 8) v_DerPreprocessor_9)))) c_main_~head~0.base) v_main_~x~0.offset_76))))) (<= .cse6 0)))) (forall ((v_prenex_6 Int) (v_DerPreprocessor_12 Int) (v_prenex_5 Int) (v_DerPreprocessor_9 Int)) (let ((.cse16 (select (select (let ((.cse29 (let ((.cse31 (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) (+ main_~x~0.offset 8) v_DerPreprocessor_12) main_~x~0.offset |v_main_#t~malloc6.base_12|)))) (store .cse31 |v_main_#t~malloc6.base_12| (store (select .cse31 |v_main_#t~malloc6.base_12|) (+ v_prenex_6 4) |c_main_#t~mem5.base|))))) (let ((.cse30 (select (select .cse29 |c_main_#t~mem5.base|) main_~x~0.offset))) (store .cse29 .cse30 (store (select .cse29 .cse30) (+ v_prenex_5 8) v_DerPreprocessor_9)))) c_main_~head~0.base) v_main_~x~0.offset_76))) (or (= |c_main_#t~mem5.base| .cse16) (and (forall ((|main_#t~malloc6.offset| Int) (|main_#t~mem8.offset| Int) (|main_#t~mem7.offset| Int) (v_DerPreprocessor_10 Int) (v_prenex_8 Int) (v_prenex_9 Int)) (<= 0 (+ 8 (select (select (let ((.cse20 (+ |main_#t~mem7.offset| 4)) (.cse21 (+ main_~x~0.offset 8))) (let ((.cse17 (let ((.cse22 (store |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base| (store (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base|) .cse21 v_prenex_8) main_~x~0.offset |main_#t~malloc6.offset|)))) (store .cse22 |v_main_#t~malloc6.base_12| (store (select .cse22 |v_main_#t~malloc6.base_12|) .cse20 main_~x~0.offset)))) (.cse18 (select (select (let ((.cse19 (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) .cse21 v_prenex_9) main_~x~0.offset |v_main_#t~malloc6.base_12|)))) (store .cse19 |v_main_#t~malloc6.base_12| (store (select .cse19 |v_main_#t~malloc6.base_12|) .cse20 |c_main_#t~mem5.base|))) |c_main_#t~mem5.base|) main_~x~0.offset))) (store .cse17 .cse18 (store (select .cse17 .cse18) (+ |main_#t~mem8.offset| 8) v_DerPreprocessor_10)))) c_main_~head~0.base) v_main_~x~0.offset_76)))) (= |v_main_#t~malloc6.base_12| .cse16) (forall ((v_prenex_7 Int) (v_DerPreprocessor_11 Int) (v_prenex_4 Int)) (<= (select (select (let ((.cse26 (+ v_prenex_6 4)) (.cse27 (+ main_~x~0.offset 8))) (let ((.cse23 (let ((.cse28 (store |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base| (store (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem5.base|) .cse27 v_DerPreprocessor_11) main_~x~0.offset v_prenex_4)))) (store .cse28 |v_main_#t~malloc6.base_12| (store (select .cse28 |v_main_#t~malloc6.base_12|) .cse26 main_~x~0.offset)))) (.cse24 (select (select (let ((.cse25 (store |c_#memory_$Pointer$.base| |c_main_#t~mem5.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem5.base|) .cse27 v_DerPreprocessor_12) main_~x~0.offset |v_main_#t~malloc6.base_12|)))) (store .cse25 |v_main_#t~malloc6.base_12| (store (select .cse25 |v_main_#t~malloc6.base_12|) .cse26 |c_main_#t~mem5.base|))) |c_main_#t~mem5.base|) main_~x~0.offset))) (store .cse23 .cse24 (store (select .cse23 .cse24) (+ v_prenex_5 8) v_prenex_7)))) c_main_~head~0.base) v_main_~x~0.offset_76) 0))))))) (not (= (select |c_#valid| |v_main_#t~malloc6.base_12|) 0)) (< main_~x~0.offset 0) (< v_main_~x~0.offset_76 0) (< c_main_~head~0.offset v_main_~x~0.offset_76))) is different from false